Spare extinguisher and arrester



(No Model.) 3 Sheets- Sheet 1.

Q. J. HOKE. SPARK BXTINGUISHER AND ARRESTBR.

Patented Feb. 5, 1889..

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( No Model.) 3 Sheets-Sheet 2.

Q. J. HOKE.

SPARK EXTINGUISHBR AND yARRIISTBR.

No. 397,363. Patented Feb. 5, 1889.

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3 Sheets-Sheet. 3. Q. HOKE SPARK BXTINGUISHER AND ARRBSTBR.

Patented Feb.. 5, 1889,.

(No Model.)

iINTTen STATES PATENT Ormea.

QUINTON J. HOKE, OF YORKVILLE, ASSIGNOR TO HIMSELF, VILLIAM J. HER- RON, OF VINNSBOROUGH, AND J.. ROBERT LINDSAY AND SAMUEL L. MILLER, BOTH OF YORKVILLE, SOUTH CAROLINA.

SPARK EXTING UISHER AND ARRESTER.

SPECIFICATION forming part of Letters Patent No. 397,363, dated February 5, 1889.

Application filed August 13, 1888. Serial No. 282,608. (No model.)

To all whom t may concern.-

Be it known that I, QUINToN J. HOKE, a citi- Zen of the United States, residing at Yorkville, in the county of York and State of South Carolin a, have invented certain new and useful Improvements in Spark Extinguishers and Arresters; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the 1o, art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and iigures of reference marked thereon, which form apart of this specification.

In the drawings, Figure l `is a sectional elevation of so much of a steam-boiler as is necessary to illustrate my invention. Fig's. 2, 3, and -I are vertical sections of a portion of the upper end of the exhaust-pipe carrying my go improved spark arrester and extinguisher.

Fig. 5 is a top plan view of the form of injector shown in Figs. and l. Fig. Gis a cross-section of one of the tubular radial arms shown in Figs. 3, 4, and 5. Figs. 7 and 8 are 2 5 diagrams illustrating the action of the sparkextinguisher.

This invention relates more especially to that class of devices known as spark-extinguishers in contradistinction to those known as spark-arresters. In the former class the sparks passing through the stack of a steamboiler are extinguished before they reach the atmosphere, or they are extinguished by impact with the stack and precipitated into the 3 5 smoke-box. In the latter class the sparks are arrested on their way to the upper end of the stack or prior to their esca-pe therefrom, this class of devices being chiefly applied to, on, or within the upper end of the smoke-stack.

4o The devices for carrying out the method that forms the subject-matter of this invention pertain in a mannertoboth of the classes of devices referred to in that they not only operate to extinguish the sparks before they issue from the stack, but in that they also operate in a measure to arrest the sparks, and more especially the heavierincandescent particles carried along with the products of combustion, which, when brought in coni act with the stack, are arrested in their upward flight 5o and precipitated into the smoke-box,

This invention is an improvement on the method of and devices for which I obtained Letters Patent of the United States under date of April G, 1886, No. 389,553; and it has for its object to increase the efliciency of the spark extinguisher and arrester.

This invention consists, essentially, in the method of arresting and extinguishing sparks, the means for carrying out the same being ap- 6o plied at or near the base of the smoke-stack of a steam-boiler for projecting the exhaust-steam into the stack in such a manner as to produce a spiral rotary or whirling motion in the draft, the greatest velocity of movement being on the pei-ipheiy, if I may so call it, of a column of steam, as in thc case ol' a whirlwind or cyclonie column, said periphery being limited by the stack itself, and for gradually increasing the volume or density of the column of 7o steam from its axis to its periphery, whereby the effect of the column of steam upon the incandescent matter, as well as upon the draft, is very materially enhanced.

The invention further consists in the method of imparting to the column of steam a gyrating motion on 'its own axis to still further enhance its effect or action upon the incandescent matter and upon the draft.

By the devices described in the patent 8o hereinbefore referred to the exhaust-steam is projected on lines tangential to a circle, th ereby producing by impact with the smoke-stack a whirling column of steam, ascending the stack on spiral lines. It is obvious, however, that when a gyrating motion is imparted to the jets themselves the point of impact with the stack is a continuously changing one for each jet, thereby producing what I may call a grinding"7 or rubbing action, since there 9o is not only impact by projection, but friction due to the gyrating motion of the jets, whicn here produce a hollow gyrating column of steam, which acts more powerfully than the ordinary exhaust-steam nozzle to produce a vacuum, and at the same time arrests and projects the incandescent .particles against the stack, where they are subj eeted to a grindsity from its axis to its periphery, which is the stack, is obtained. The effect of this last arrangement of spark extinguisher will be readily understood.

The extinguisher, whether stationary or rey- .olublc on the exhaust-pipe l), is provided with a screw-plug, A, ou removing which, and substituting a nozzle therefor7 the devices may be used as an. ordinary exhaust-pipe.

llaving described my invention, I claim- 1. The herein-described method. ot extinguishing and arresting incandescent particles carried along with the products ot' combustion through the smoke-stack ot' a steam-engine, which consists in injecting jets ot' steam into the base of the stack from points on a circle concentric with the axis of said stack and on lines tangential to the said circle and imparting a gyratory motion to said jets, substantially as and t'or the purposes specified.

2. The herein-described method ot' extinguishing and arresting incandescent particles carried along with the products ot' combustion through the smoke-stack of a steam-engine, which consists in injecting jets of steam at an inclination to a Vertical into the base of the stack from points on a circle concentric with the axis of said stack and on lines tangential to the said circle and imparting a gyratory motion to said jets, substantially as and for the purposes speciied.

The herein-described method of extinguishing and arresting incandescent particles carried alongI with the products oi combustion through thc smoke-stack of a steam-cngine, which consists in injecting j ets of steam in the form ot' sheets into the base ot the stack from points on a circle concentric with the axis ot' the stack and on lines tangential to the said circle, substantially as and for the purposes speci tied.

4. The herein-described method of extinguishinj ,I and arresting incandescent particles carried alongI with the products of combustion through the smoke-stach et' a steam-engine, which consists in injecting jets Ot' steam in the form ot" sheets increasing in Volume or density in a radial direction into the base of the stack from points on a circle concentric with the axis ol' said stack and on lilies tangential to the said circle, substantially as and for the purposes specified.

5. The herein-described method ot' extinguishin g and arresting incandescent particles carried along with the products of combustion through the smoke-stack of a steam-engine, which consists in injecting jets of steam in the form of sheets into the base of the stack from points on a circle concentric with the axis of said. stack and on lines tangential to the said circle and imparting a gyratory motion to the jets, substantially as and for the purposes specified.

G. The herein-described method oi' extinguishing and arresting incandescent particles carried along with the products of combustion through the smoke-stack of a steameengine, which consists in iir'jectil'ig jets of steam in the vtorni of a sheet and at an inclination to the Vertical into the base of the stack from points on a circle concentric with the axis ot'A said stack and on lines tangential to the said circle, substantially as and for the purposes specilied.

7. The herein-described method ot' extinguishing and arresting incandescent particles carried along with the products of combustion through the smoke-stack of a steam-engine, which consists in injecting jets of steam at an inclination to a Vertical and in the torni of a sheet vincreasing in volume or density in a radial direction into the base of the stack from points on a circle concentric with the axis of the stack and on lines tangential to the said circle, substantially as and for the purposes specified.

S. The herein-described method of extinguishing and arresting Yincandescent particles carried along with the products of combustion through the smoke-stack of a steam-cngine, which consists in injecting jets of steam. at an inclination to a vertical and in the form of a sheet increasing in volume or density in a radial direct-ion into the base of the stack from points on a circle concentric with the axis of said stack and on lines tangential to the said circle and imparting a gyratory motion to the jets, substantially as and for the purposes specified.

In testimony wh ereof l aliix my signature in presence ot' two witnesses.

QUINTON J. HOKE.

'Witn esses:

J. D. ANDREW,

his D. B. BROWN.

mark.

IOO 

